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1 /*
2  * Common LCD routines for supported CPUs
3  *
4  * (C) Copyright 2001-2002
5  * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
6  *
7  * See file CREDITS for list of people who contributed to this
8  * project.
9  *
10  * This program is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU General Public License as
12  * published by the Free Software Foundation; either version 2 of
13  * the License, or (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
23  * MA 02111-1307 USA
24  */
25
26 /************************************************************************/
27 /* ** HEADER FILES                                                      */
28 /************************************************************************/
29
30 /* #define DEBUG */
31
32 #include <config.h>
33 #include <common.h>
34 #include <command.h>
35 #include <stdarg.h>
36 #include <search.h>
37 #include <env_callback.h>
38 #include <linux/types.h>
39 #include <stdio_dev.h>
40 #if defined(CONFIG_POST)
41 #include <post.h>
42 #endif
43 #include <lcd.h>
44 #include <watchdog.h>
45
46 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
47         defined(CONFIG_CPU_MONAHANS)
48 #define CONFIG_CPU_PXA
49 #include <asm/byteorder.h>
50 #endif
51
52 #if defined(CONFIG_MPC823)
53 #include <lcdvideo.h>
54 #endif
55
56 #if defined(CONFIG_ATMEL_LCD)
57 #include <atmel_lcdc.h>
58 #endif
59
60 /************************************************************************/
61 /* ** FONT DATA                                                         */
62 /************************************************************************/
63 #include <video_font.h>         /* Get font data, width and height      */
64 #include <video_font_data.h>
65
66 /************************************************************************/
67 /* ** LOGO DATA                                                         */
68 /************************************************************************/
69 #ifdef CONFIG_LCD_LOGO
70 # include <bmp_logo.h>          /* Get logo data, width and height      */
71 # include <bmp_logo_data.h>
72 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
73 #  error Default Color Map overlaps with Logo Color Map
74 # endif
75 #endif
76
77 #ifndef CONFIG_LCD_ALIGNMENT
78 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
79 #endif
80
81 /* By default we scroll by a single line */
82 #ifndef CONFIG_CONSOLE_SCROLL_LINES
83 #define CONFIG_CONSOLE_SCROLL_LINES 1
84 #endif
85
86 /************************************************************************/
87 /* ** CONSOLE DEFINITIONS & FUNCTIONS                                   */
88 /************************************************************************/
89 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
90 # define CONSOLE_ROWS           ((panel_info.vl_row-BMP_LOGO_HEIGHT) \
91                                         / VIDEO_FONT_HEIGHT)
92 #else
93 # define CONSOLE_ROWS           (panel_info.vl_row / VIDEO_FONT_HEIGHT)
94 #endif
95
96 #define CONSOLE_COLS            (panel_info.vl_col / VIDEO_FONT_WIDTH)
97 #define CONSOLE_ROW_SIZE        (VIDEO_FONT_HEIGHT * lcd_line_length)
98 #define CONSOLE_ROW_FIRST       lcd_console_address
99 #define CONSOLE_ROW_SECOND      (lcd_console_address + CONSOLE_ROW_SIZE)
100 #define CONSOLE_ROW_LAST        (lcd_console_address + CONSOLE_SIZE \
101                                         - CONSOLE_ROW_SIZE)
102 #define CONSOLE_SIZE            (CONSOLE_ROW_SIZE * CONSOLE_ROWS)
103 #define CONSOLE_SCROLL_SIZE     (CONSOLE_SIZE - CONSOLE_ROW_SIZE)
104
105 #if LCD_BPP == LCD_MONOCHROME
106 # define COLOR_MASK(c)          ((c)      | (c) << 1 | (c) << 2 | (c) << 3 | \
107                                  (c) << 4 | (c) << 5 | (c) << 6 | (c) << 7)
108 #elif (LCD_BPP == LCD_COLOR8) || (LCD_BPP == LCD_COLOR16)
109 # define COLOR_MASK(c)          (c)
110 #else
111 # error Unsupported LCD BPP.
112 #endif
113
114 DECLARE_GLOBAL_DATA_PTR;
115
116 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count);
117 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s);
118 static inline void lcd_putc_xy(ushort x, ushort y, uchar  c);
119
120 static int lcd_init(void *lcdbase);
121
122 static void *lcd_logo(void);
123
124 static int lcd_getbgcolor(void);
125 static void lcd_setfgcolor(int color);
126 static void lcd_setbgcolor(int color);
127
128 static int lcd_color_fg;
129 static int lcd_color_bg;
130 int lcd_line_length;
131
132 char lcd_is_enabled = 0;
133
134 static short console_col;
135 static short console_row;
136
137 static void *lcd_console_address;
138 static void *lcd_base;                  /* Start of framebuffer memory  */
139
140 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
141
142 /************************************************************************/
143
144 /* Flush LCD activity to the caches */
145 void lcd_sync(void)
146 {
147         /*
148          * flush_dcache_range() is declared in common.h but it seems that some
149          * architectures do not actually implement it. Is there a way to find
150          * out whether it exists? For now, ARM is safe.
151          */
152 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
153         int line_length;
154
155         if (lcd_flush_dcache)
156                 flush_dcache_range((u32)lcd_base,
157                         (u32)(lcd_base + lcd_get_size(&line_length)));
158 #endif
159 }
160
161 void lcd_set_flush_dcache(int flush)
162 {
163         lcd_flush_dcache = (flush != 0);
164 }
165
166 /*----------------------------------------------------------------------*/
167
168 static void console_scrollup(void)
169 {
170         const int rows = CONFIG_CONSOLE_SCROLL_LINES;
171
172         /* Copy up rows ignoring those that will be overwritten */
173         memcpy(CONSOLE_ROW_FIRST,
174                lcd_console_address + CONSOLE_ROW_SIZE * rows,
175                CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows);
176
177         /* Clear the last rows */
178         memset(lcd_console_address + CONSOLE_SIZE - CONSOLE_ROW_SIZE * rows,
179                 COLOR_MASK(lcd_color_bg),
180                 CONSOLE_ROW_SIZE * rows);
181
182         lcd_sync();
183         console_row -= rows;
184 }
185
186 /*----------------------------------------------------------------------*/
187
188 static inline void console_back(void)
189 {
190         if (--console_col < 0) {
191                 console_col = CONSOLE_COLS-1 ;
192                 if (--console_row < 0)
193                         console_row = 0;
194         }
195
196         lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
197                 console_row * VIDEO_FONT_HEIGHT, ' ');
198 }
199
200 /*----------------------------------------------------------------------*/
201
202 static inline void console_newline(void)
203 {
204         console_col = 0;
205
206         /* Check if we need to scroll the terminal */
207         if (++console_row >= CONSOLE_ROWS)
208                 console_scrollup();
209         else
210                 lcd_sync();
211 }
212
213 /*----------------------------------------------------------------------*/
214
215 void lcd_putc(const char c)
216 {
217         if (!lcd_is_enabled) {
218                 serial_putc(c);
219
220                 return;
221         }
222
223         switch (c) {
224         case '\r':
225                 console_col = 0;
226
227                 return;
228         case '\n':
229                 console_newline();
230
231                 return;
232         case '\t':      /* Tab (8 chars alignment) */
233                 console_col +=  8;
234                 console_col &= ~7;
235
236                 if (console_col >= CONSOLE_COLS)
237                         console_newline();
238
239                 return;
240         case '\b':
241                 console_back();
242
243                 return;
244         default:
245                 lcd_putc_xy(console_col * VIDEO_FONT_WIDTH,
246                         console_row * VIDEO_FONT_HEIGHT, c);
247                 if (++console_col >= CONSOLE_COLS)
248                         console_newline();
249         }
250 }
251
252 /*----------------------------------------------------------------------*/
253
254 void lcd_puts(const char *s)
255 {
256         if (!lcd_is_enabled) {
257                 serial_puts(s);
258
259                 return;
260         }
261
262         while (*s)
263                 lcd_putc(*s++);
264
265         lcd_sync();
266 }
267
268 /*----------------------------------------------------------------------*/
269
270 void lcd_printf(const char *fmt, ...)
271 {
272         va_list args;
273         char buf[CONFIG_SYS_PBSIZE];
274
275         va_start(args, fmt);
276         vsprintf(buf, fmt, args);
277         va_end(args);
278
279         lcd_puts(buf);
280 }
281
282 /************************************************************************/
283 /* ** Low-Level Graphics Routines                                       */
284 /************************************************************************/
285
286 static void lcd_drawchars(ushort x, ushort y, uchar *str, int count)
287 {
288         uchar *dest;
289         ushort row;
290
291 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
292         y += BMP_LOGO_HEIGHT;
293 #endif
294
295 #if LCD_BPP == LCD_MONOCHROME
296         ushort off  = x * (1 << LCD_BPP) % 8;
297 #endif
298
299         dest = (uchar *)(lcd_base + y * lcd_line_length + x * (1 << LCD_BPP) / 8);
300
301         for (row = 0; row < VIDEO_FONT_HEIGHT; ++row, dest += lcd_line_length) {
302                 uchar *s = str;
303                 int i;
304 #if LCD_BPP == LCD_COLOR16
305                 ushort *d = (ushort *)dest;
306 #else
307                 uchar *d = dest;
308 #endif
309
310 #if LCD_BPP == LCD_MONOCHROME
311                 uchar rest = *d & -(1 << (8 - off));
312                 uchar sym;
313 #endif
314                 for (i = 0; i < count; ++i) {
315                         uchar c, bits;
316
317                         c = *s++;
318                         bits = video_fontdata[c * VIDEO_FONT_HEIGHT + row];
319
320 #if LCD_BPP == LCD_MONOCHROME
321                         sym  = (COLOR_MASK(lcd_color_fg) & bits) |
322                                 (COLOR_MASK(lcd_color_bg) & ~bits);
323
324                         *d++ = rest | (sym >> off);
325                         rest = sym << (8-off);
326 #elif LCD_BPP == LCD_COLOR8
327                         for (c = 0; c < 8; ++c) {
328                                 *d++ = (bits & 0x80) ?
329                                                 lcd_color_fg : lcd_color_bg;
330                                 bits <<= 1;
331                         }
332 #elif LCD_BPP == LCD_COLOR16
333                         for (c = 0; c < 8; ++c) {
334                                 *d++ = (bits & 0x80) ?
335                                                 lcd_color_fg : lcd_color_bg;
336                                 bits <<= 1;
337                         }
338 #endif
339                 }
340 #if LCD_BPP == LCD_MONOCHROME
341                 *d  = rest | (*d & ((1 << (8 - off)) - 1));
342 #endif
343         }
344 }
345
346 /*----------------------------------------------------------------------*/
347
348 static inline void lcd_puts_xy(ushort x, ushort y, uchar *s)
349 {
350         lcd_drawchars(x, y, s, strlen((char *)s));
351 }
352
353 /*----------------------------------------------------------------------*/
354
355 static inline void lcd_putc_xy(ushort x, ushort y, uchar c)
356 {
357         lcd_drawchars(x, y, &c, 1);
358 }
359
360 /************************************************************************/
361 /**  Small utility to check that you got the colours right              */
362 /************************************************************************/
363 #ifdef LCD_TEST_PATTERN
364
365 #define N_BLK_VERT      2
366 #define N_BLK_HOR       3
367
368 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
369         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
370         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
371 };
372
373 static void test_pattern(void)
374 {
375         ushort v_max  = panel_info.vl_row;
376         ushort h_max  = panel_info.vl_col;
377         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
378         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
379         ushort v, h;
380         uchar *pix = (uchar *)lcd_base;
381
382         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
383                 h_max, v_max, h_step, v_step);
384
385         /* WARNING: Code silently assumes 8bit/pixel */
386         for (v = 0; v < v_max; ++v) {
387                 uchar iy = v / v_step;
388                 for (h = 0; h < h_max; ++h) {
389                         uchar ix = N_BLK_HOR * iy + h / h_step;
390                         *pix++ = test_colors[ix];
391                 }
392         }
393 }
394 #endif /* LCD_TEST_PATTERN */
395
396
397 /************************************************************************/
398 /* ** GENERIC Initialization Routines                                   */
399 /************************************************************************/
400
401 int lcd_get_size(int *line_length)
402 {
403         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
404         return *line_length * panel_info.vl_row;
405 }
406
407 int drv_lcd_init(void)
408 {
409         struct stdio_dev lcddev;
410         int rc;
411
412         lcd_base = (void *) gd->fb_base;
413
414         lcd_init(lcd_base);             /* LCD initialization */
415
416         /* Device initialization */
417         memset(&lcddev, 0, sizeof(lcddev));
418
419         strcpy(lcddev.name, "lcd");
420         lcddev.ext   = 0;                       /* No extensions */
421         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
422         lcddev.putc  = lcd_putc;                /* 'putc' function */
423         lcddev.puts  = lcd_puts;                /* 'puts' function */
424
425         rc = stdio_register(&lcddev);
426
427         return (rc == 0) ? 1 : rc;
428 }
429
430 /*----------------------------------------------------------------------*/
431 void lcd_clear(void)
432 {
433 #if LCD_BPP == LCD_MONOCHROME
434         /* Setting the palette */
435         lcd_initcolregs();
436
437 #elif LCD_BPP == LCD_COLOR8
438         /* Setting the palette */
439         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
440         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
441         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
442         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
443         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
444         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
445         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
446         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
447         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
448 #endif
449
450 #ifndef CONFIG_SYS_WHITE_ON_BLACK
451         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
452         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
453 #else
454         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
455         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
456 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
457
458 #ifdef  LCD_TEST_PATTERN
459         test_pattern();
460 #else
461         /* set framebuffer to background color */
462         memset((char *)lcd_base,
463                 COLOR_MASK(lcd_getbgcolor()),
464                 lcd_line_length * panel_info.vl_row);
465 #endif
466         /* Paint the logo and retrieve LCD base address */
467         debug("[LCD] Drawing the logo...\n");
468         lcd_console_address = lcd_logo();
469
470         console_col = 0;
471         console_row = 0;
472         lcd_sync();
473 }
474
475 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
476                         char *const argv[])
477 {
478         lcd_clear();
479         return 0;
480 }
481
482 U_BOOT_CMD(
483         cls,    1,      1,      do_lcd_clear,
484         "clear screen",
485         ""
486 );
487
488 /*----------------------------------------------------------------------*/
489
490 static int lcd_init(void *lcdbase)
491 {
492         /* Initialize the lcd controller */
493         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
494
495         lcd_ctrl_init(lcdbase);
496
497         /*
498          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi_b) ignores
499          * the 'lcdbase' argument and uses custom lcd base address
500          * by setting up gd->fb_base. Check for this condition and fixup
501          * 'lcd_base' address.
502          */
503         if ((unsigned long)lcdbase != gd->fb_base)
504                 lcd_base = (void *)gd->fb_base;
505
506         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
507
508         lcd_get_size(&lcd_line_length);
509         lcd_line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
510         lcd_is_enabled = 1;
511         lcd_clear();
512         lcd_enable();
513
514         /* Initialize the console */
515         console_col = 0;
516 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
517         console_row = 7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT;
518 #else
519         console_row = 1;        /* leave 1 blank line below logo */
520 #endif
521
522         return 0;
523 }
524
525
526 /************************************************************************/
527 /* ** ROM capable initialization part - needed to reserve FB memory     */
528 /************************************************************************/
529 /*
530  * This is called early in the system initialization to grab memory
531  * for the LCD controller.
532  * Returns new address for monitor, after reserving LCD buffer memory
533  *
534  * Note that this is running from ROM, so no write access to global data.
535  */
536 ulong lcd_setmem(ulong addr)
537 {
538         ulong size;
539         int line_length;
540
541         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
542                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
543
544         size = lcd_get_size(&line_length);
545
546         /* Round up to nearest full page, or MMU section if defined */
547         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
548         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
549
550         /* Allocate pages for the frame buffer. */
551         addr -= size;
552
553         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
554               size >> 10, addr);
555
556         return addr;
557 }
558
559 /*----------------------------------------------------------------------*/
560
561 static void lcd_setfgcolor(int color)
562 {
563         lcd_color_fg = color;
564 }
565
566 /*----------------------------------------------------------------------*/
567
568 static void lcd_setbgcolor(int color)
569 {
570         lcd_color_bg = color;
571 }
572
573 /*----------------------------------------------------------------------*/
574
575 int lcd_getfgcolor(void)
576 {
577         return lcd_color_fg;
578 }
579
580 /*----------------------------------------------------------------------*/
581
582 static int lcd_getbgcolor(void)
583 {
584         return lcd_color_bg;
585 }
586
587 /************************************************************************/
588 /* ** Chipset depending Bitmap / Logo stuff...                          */
589 /************************************************************************/
590 static inline ushort *configuration_get_cmap(void)
591 {
592 #if defined CONFIG_CPU_PXA
593         struct pxafb_info *fbi = &panel_info.pxa;
594         return (ushort *)fbi->palette;
595 #elif defined(CONFIG_MPC823)
596         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
597         cpm8xx_t *cp = &(immr->im_cpm);
598         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
599 #elif defined(CONFIG_ATMEL_LCD)
600         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
601 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
602         return panel_info.cmap;
603 #elif defined(CONFIG_LCD_LOGO)
604         return bmp_logo_palette;
605 #else
606         return NULL;
607 #endif
608 }
609
610 #ifdef CONFIG_LCD_LOGO
611 void bitmap_plot(int x, int y)
612 {
613 #ifdef CONFIG_ATMEL_LCD
614         uint *cmap = (uint *)bmp_logo_palette;
615 #else
616         ushort *cmap = (ushort *)bmp_logo_palette;
617 #endif
618         ushort i, j;
619         uchar *bmap;
620         uchar *fb;
621         ushort *fb16;
622 #if defined(CONFIG_MPC823)
623         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
624         cpm8xx_t *cp = &(immr->im_cpm);
625 #endif
626         unsigned bpix = NBITS(panel_info.vl_bpix);
627
628         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
629                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
630                 ARRAY_SIZE(bmp_logo_palette));
631
632         bmap = &bmp_logo_bitmap[0];
633         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
634
635         if (bpix < 12) {
636                 /* Leave room for default color map
637                  * default case: generic system with no cmap (most likely 16bpp)
638                  * cmap was set to the source palette, so no change is done.
639                  * This avoids even more ifdefs in the next stanza
640                  */
641 #if defined(CONFIG_MPC823)
642                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
643 #elif defined(CONFIG_ATMEL_LCD)
644                 cmap = (uint *)configuration_get_cmap();
645 #else
646                 cmap = configuration_get_cmap();
647 #endif
648
649                 WATCHDOG_RESET();
650
651                 /* Set color map */
652                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
653                         ushort colreg = bmp_logo_palette[i];
654 #ifdef CONFIG_ATMEL_LCD
655                         uint lut_entry;
656 #ifdef CONFIG_ATMEL_LCD_BGR555
657                         lut_entry = ((colreg & 0x000F) << 11) |
658                                         ((colreg & 0x00F0) <<  2) |
659                                         ((colreg & 0x0F00) >>  7);
660 #else /* CONFIG_ATMEL_LCD_RGB565 */
661                         lut_entry = ((colreg & 0x000F) << 1) |
662                                         ((colreg & 0x00F0) << 3) |
663                                         ((colreg & 0x0F00) << 4);
664 #endif
665                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
666                         cmap++;
667 #else /* !CONFIG_ATMEL_LCD */
668 #ifdef  CONFIG_SYS_INVERT_COLORS
669                         *cmap++ = 0xffff - colreg;
670 #else
671                         *cmap++ = colreg;
672 #endif
673 #endif /* CONFIG_ATMEL_LCD */
674                 }
675
676                 WATCHDOG_RESET();
677
678                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
679                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
680                         bmap += BMP_LOGO_WIDTH;
681                         fb += panel_info.vl_col;
682                 }
683         }
684         else { /* true color mode */
685                 u16 col16;
686                 fb16 = (ushort *)fb;
687                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
688                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
689                                 col16 = bmp_logo_palette[(bmap[j]-16)];
690                                 fb16[j] =
691                                         ((col16 & 0x000F) << 1) |
692                                         ((col16 & 0x00F0) << 3) |
693                                         ((col16 & 0x0F00) << 4);
694                                 }
695                         bmap += BMP_LOGO_WIDTH;
696                         fb16 += panel_info.vl_col;
697                 }
698         }
699
700         WATCHDOG_RESET();
701         lcd_sync();
702 }
703 #else
704 static inline void bitmap_plot(int x, int y) {}
705 #endif /* CONFIG_LCD_LOGO */
706
707 /*----------------------------------------------------------------------*/
708 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
709 /*
710  * Display the BMP file located at address bmp_image.
711  * Only uncompressed.
712  */
713
714 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
715 #define BMP_ALIGN_CENTER        0x7FFF
716
717 static void splash_align_axis(int *axis, unsigned long panel_size,
718                                         unsigned long picture_size)
719 {
720         unsigned long panel_picture_delta = panel_size - picture_size;
721         unsigned long axis_alignment;
722
723         if (*axis == BMP_ALIGN_CENTER)
724                 axis_alignment = panel_picture_delta / 2;
725         else if (*axis < 0)
726                 axis_alignment = panel_picture_delta + *axis + 1;
727         else
728                 return;
729
730         *axis = max(0, axis_alignment);
731 }
732 #endif
733
734
735 #ifdef CONFIG_LCD_BMP_RLE8
736
737 #define BMP_RLE8_ESCAPE         0
738 #define BMP_RLE8_EOL            0
739 #define BMP_RLE8_EOBMP          1
740 #define BMP_RLE8_DELTA          2
741
742 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
743                                   int cnt)
744 {
745         while (cnt > 0) {
746                 *(*fbp)++ = cmap[*bmap++];
747                 cnt--;
748         }
749 }
750
751 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
752 {
753         ushort *fb = *fbp;
754         int cnt_8copy = cnt >> 3;
755
756         cnt -= cnt_8copy << 3;
757         while (cnt_8copy > 0) {
758                 *fb++ = c;
759                 *fb++ = c;
760                 *fb++ = c;
761                 *fb++ = c;
762                 *fb++ = c;
763                 *fb++ = c;
764                 *fb++ = c;
765                 *fb++ = c;
766                 cnt_8copy--;
767         }
768         while (cnt > 0) {
769                 *fb++ = c;
770                 cnt--;
771         }
772         *fbp = fb;
773 }
774
775 /*
776  * Do not call this function directly, must be called from lcd_display_bitmap.
777  */
778 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
779                                     int x_off, int y_off)
780 {
781         uchar *bmap;
782         ulong width, height;
783         ulong cnt, runlen;
784         int x, y;
785         int decode = 1;
786
787         width = le32_to_cpu(bmp->header.width);
788         height = le32_to_cpu(bmp->header.height);
789         bmap = (uchar *)bmp + le32_to_cpu(bmp->header.data_offset);
790
791         x = 0;
792         y = height - 1;
793
794         while (decode) {
795                 if (bmap[0] == BMP_RLE8_ESCAPE) {
796                         switch (bmap[1]) {
797                         case BMP_RLE8_EOL:
798                                 /* end of line */
799                                 bmap += 2;
800                                 x = 0;
801                                 y--;
802                                 /* 16bpix, 2-byte per pixel, width should *2 */
803                                 fb -= (width * 2 + lcd_line_length);
804                                 break;
805                         case BMP_RLE8_EOBMP:
806                                 /* end of bitmap */
807                                 decode = 0;
808                                 break;
809                         case BMP_RLE8_DELTA:
810                                 /* delta run */
811                                 x += bmap[2];
812                                 y -= bmap[3];
813                                 /* 16bpix, 2-byte per pixel, x should *2 */
814                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
815                                         * lcd_line_length + (x + x_off) * 2);
816                                 bmap += 4;
817                                 break;
818                         default:
819                                 /* unencoded run */
820                                 runlen = bmap[1];
821                                 bmap += 2;
822                                 if (y < height) {
823                                         if (x < width) {
824                                                 if (x + runlen > width)
825                                                         cnt = width - x;
826                                                 else
827                                                         cnt = runlen;
828                                                 draw_unencoded_bitmap(
829                                                         (ushort **)&fb,
830                                                         bmap, cmap, cnt);
831                                         }
832                                         x += runlen;
833                                 }
834                                 bmap += runlen;
835                                 if (runlen & 1)
836                                         bmap++;
837                         }
838                 } else {
839                         /* encoded run */
840                         if (y < height) {
841                                 runlen = bmap[0];
842                                 if (x < width) {
843                                         /* aggregate the same code */
844                                         while (bmap[0] == 0xff &&
845                                                bmap[2] != BMP_RLE8_ESCAPE &&
846                                                bmap[1] == bmap[3]) {
847                                                 runlen += bmap[2];
848                                                 bmap += 2;
849                                         }
850                                         if (x + runlen > width)
851                                                 cnt = width - x;
852                                         else
853                                                 cnt = runlen;
854                                         draw_encoded_bitmap((ushort **)&fb,
855                                                 cmap[bmap[1]], cnt);
856                                 }
857                                 x += runlen;
858                         }
859                         bmap += 2;
860                 }
861         }
862 }
863 #endif
864
865 #if defined(CONFIG_MPC823) || defined(CONFIG_MCC200)
866 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
867 #else
868 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
869 #endif
870
871 #if defined(CONFIG_BMP_16BPP)
872 #if defined(CONFIG_ATMEL_LCD_BGR555)
873 static inline void fb_put_word(uchar **fb, uchar **from)
874 {
875         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
876         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
877         *from += 2;
878 }
879 #else
880 static inline void fb_put_word(uchar **fb, uchar **from)
881 {
882         *(*fb)++ = *(*from)++;
883         *(*fb)++ = *(*from)++;
884 }
885 #endif
886 #endif /* CONFIG_BMP_16BPP */
887
888 int lcd_display_bitmap(ulong bmp_image, int x, int y)
889 {
890 #if !defined(CONFIG_MCC200)
891         ushort *cmap = NULL;
892 #endif
893         ushort *cmap_base = NULL;
894         ushort i, j;
895         uchar *fb;
896         bmp_image_t *bmp=(bmp_image_t *)bmp_image;
897         uchar *bmap;
898         ushort padded_width;
899         unsigned long width, height, byte_width;
900         unsigned long pwidth = panel_info.vl_col;
901         unsigned colors, bpix, bmp_bpix;
902
903         if (!bmp || !(bmp->header.signature[0] == 'B' &&
904                 bmp->header.signature[1] == 'M')) {
905                 printf("Error: no valid bmp image at %lx\n", bmp_image);
906
907                 return 1;
908         }
909
910         width = le32_to_cpu(bmp->header.width);
911         height = le32_to_cpu(bmp->header.height);
912         bmp_bpix = le16_to_cpu(bmp->header.bit_count);
913         colors = 1 << bmp_bpix;
914
915         bpix = NBITS(panel_info.vl_bpix);
916
917         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
918                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
919                         bpix, bmp_bpix);
920
921                 return 1;
922         }
923
924         /* We support displaying 8bpp BMPs on 16bpp LCDs */
925         if (bpix != bmp_bpix && !(bmp_bpix == 8 && bpix == 16)) {
926                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
927                         bpix,
928                         le16_to_cpu(bmp->header.bit_count));
929
930                 return 1;
931         }
932
933         debug("Display-bmp: %d x %d  with %d colors\n",
934                 (int)width, (int)height, (int)colors);
935
936 #if !defined(CONFIG_MCC200)
937         /* MCC200 LCD doesn't need CMAP, supports 1bpp b&w only */
938         if (bmp_bpix == 8) {
939                 cmap = configuration_get_cmap();
940                 cmap_base = cmap;
941
942                 /* Set color map */
943                 for (i = 0; i < colors; ++i) {
944                         bmp_color_table_entry_t cte = bmp->color_table[i];
945 #if !defined(CONFIG_ATMEL_LCD)
946                         ushort colreg =
947                                 ( ((cte.red)   << 8) & 0xf800) |
948                                 ( ((cte.green) << 3) & 0x07e0) |
949                                 ( ((cte.blue)  >> 3) & 0x001f) ;
950 #ifdef CONFIG_SYS_INVERT_COLORS
951                         *cmap = 0xffff - colreg;
952 #else
953                         *cmap = colreg;
954 #endif
955 #if defined(CONFIG_MPC823)
956                         cmap--;
957 #else
958                         cmap++;
959 #endif
960 #else /* CONFIG_ATMEL_LCD */
961                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
962 #endif
963                 }
964         }
965 #endif
966
967         /*
968          *  BMP format for Monochrome assumes that the state of a
969          * pixel is described on a per Bit basis, not per Byte.
970          *  So, in case of Monochrome BMP we should align widths
971          * on a byte boundary and convert them from Bit to Byte
972          * units.
973          *  Probably, PXA250 and MPC823 process 1bpp BMP images in
974          * their own ways, so make the converting to be MCC200
975          * specific.
976          */
977 #if defined(CONFIG_MCC200)
978         if (bpix == 1) {
979                 width = ((width + 7) & ~7) >> 3;
980                 x     = ((x + 7) & ~7) >> 3;
981                 pwidth= ((pwidth + 7) & ~7) >> 3;
982         }
983 #endif
984
985         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
986
987 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
988         splash_align_axis(&x, pwidth, width);
989         splash_align_axis(&y, panel_info.vl_row, height);
990 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
991
992         if ((x + width) > pwidth)
993                 width = pwidth - x;
994         if ((y + height) > panel_info.vl_row)
995                 height = panel_info.vl_row - y;
996
997         bmap = (uchar *) bmp + le32_to_cpu(bmp->header.data_offset);
998         fb   = (uchar *) (lcd_base +
999                 (y + height - 1) * lcd_line_length + x * bpix / 8);
1000
1001         switch (bmp_bpix) {
1002         case 1: /* pass through */
1003         case 8:
1004 #ifdef CONFIG_LCD_BMP_RLE8
1005                 if (le32_to_cpu(bmp->header.compression) == BMP_BI_RLE8) {
1006                         if (bpix != 16) {
1007                                 /* TODO implement render code for bpix != 16 */
1008                                 printf("Error: only support 16 bpix");
1009                                 return 1;
1010                         }
1011                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
1012                         break;
1013                 }
1014 #endif
1015
1016                 if (bpix != 16)
1017                         byte_width = width;
1018                 else
1019                         byte_width = width * 2;
1020
1021                 for (i = 0; i < height; ++i) {
1022                         WATCHDOG_RESET();
1023                         for (j = 0; j < width; j++) {
1024                                 if (bpix != 16) {
1025                                         FB_PUT_BYTE(fb, bmap);
1026                                 } else {
1027                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
1028                                         fb += sizeof(uint16_t) / sizeof(*fb);
1029                                 }
1030                         }
1031                         bmap += (padded_width - width);
1032                         fb -= byte_width + lcd_line_length;
1033                 }
1034                 break;
1035
1036 #if defined(CONFIG_BMP_16BPP)
1037         case 16:
1038                 for (i = 0; i < height; ++i) {
1039                         WATCHDOG_RESET();
1040                         for (j = 0; j < width; j++)
1041                                 fb_put_word(&fb, &bmap);
1042
1043                         bmap += (padded_width - width) * 2;
1044                         fb -= width * 2 + lcd_line_length;
1045                 }
1046                 break;
1047 #endif /* CONFIG_BMP_16BPP */
1048
1049 #if defined(CONFIG_BMP_32BPP)
1050         case 32:
1051                 for (i = 0; i < height; ++i) {
1052                         for (j = 0; j < width; j++) {
1053                                 *(fb++) = *(bmap++);
1054                                 *(fb++) = *(bmap++);
1055                                 *(fb++) = *(bmap++);
1056                                 *(fb++) = *(bmap++);
1057                         }
1058                         fb -= lcd_line_length + width * (bpix / 8);
1059                 }
1060                 break;
1061 #endif /* CONFIG_BMP_32BPP */
1062         default:
1063                 break;
1064         };
1065
1066         lcd_sync();
1067         return 0;
1068 }
1069 #endif
1070
1071 #ifdef CONFIG_SPLASH_SCREEN_PREPARE
1072 static inline int splash_screen_prepare(void)
1073 {
1074         return board_splash_screen_prepare();
1075 }
1076 #else
1077 static inline int splash_screen_prepare(void)
1078 {
1079         return 0;
1080 }
1081 #endif
1082
1083 static void *lcd_logo(void)
1084 {
1085 #ifdef CONFIG_SPLASH_SCREEN
1086         char *s;
1087         ulong addr;
1088         static int do_splash = 1;
1089
1090         if (do_splash && (s = getenv("splashimage")) != NULL) {
1091                 int x = 0, y = 0;
1092                 do_splash = 0;
1093
1094                 if (splash_screen_prepare())
1095                         return (void *)gd->fb_base;
1096
1097                 addr = simple_strtoul (s, NULL, 16);
1098 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
1099                 s = getenv("splashpos");
1100                 if (s != NULL) {
1101                         if (s[0] == 'm')
1102                                 x = BMP_ALIGN_CENTER;
1103                         else
1104                                 x = simple_strtol(s, NULL, 0);
1105
1106                         s = strchr(s + 1, ',');
1107                         if (s != NULL) {
1108                                 if (s[1] == 'm')
1109                                         y = BMP_ALIGN_CENTER;
1110                                 else
1111                                         y = simple_strtol (s + 1, NULL, 0);
1112                         }
1113                 }
1114 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
1115
1116                 if (bmp_display(addr, x, y) == 0)
1117                         return (void *)lcd_base;
1118         }
1119 #endif /* CONFIG_SPLASH_SCREEN */
1120
1121         bitmap_plot(0, 0);
1122
1123 #ifdef CONFIG_LCD_INFO
1124         console_col = LCD_INFO_X / VIDEO_FONT_WIDTH;
1125         console_row = LCD_INFO_Y / VIDEO_FONT_HEIGHT;
1126         lcd_show_board_info();
1127 #endif /* CONFIG_LCD_INFO */
1128
1129 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
1130         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
1131 #else
1132         return (void *)lcd_base;
1133 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
1134 }
1135
1136 #ifdef CONFIG_SPLASHIMAGE_GUARD
1137 static int on_splashimage(const char *name, const char *value, enum env_op op,
1138         int flags)
1139 {
1140         ulong addr;
1141         int aligned;
1142
1143         if (op == env_op_delete)
1144                 return 0;
1145
1146         addr = simple_strtoul(value, NULL, 16);
1147         /* See README.displaying-bmps */
1148         aligned = (addr % 4 == 2);
1149         if (!aligned) {
1150                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
1151                 return -1;
1152         }
1153
1154         return 0;
1155 }
1156
1157 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
1158 #endif
1159
1160 void lcd_position_cursor(unsigned col, unsigned row)
1161 {
1162         console_col = min(col, CONSOLE_COLS - 1);
1163         console_row = min(row, CONSOLE_ROWS - 1);
1164 }
1165
1166 int lcd_get_pixel_width(void)
1167 {
1168         return panel_info.vl_col;
1169 }
1170
1171 int lcd_get_pixel_height(void)
1172 {
1173         return panel_info.vl_row;
1174 }
1175
1176 int lcd_get_screen_rows(void)
1177 {
1178         return CONSOLE_ROWS;
1179 }
1180
1181 int lcd_get_screen_columns(void)
1182 {
1183         return CONSOLE_COLS;
1184 }